Journal of Industrial and Engineering Chemistry

  • Volume 21
  • /
  • Pages.436-442
  • /
  • 2015
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  • 1226-086X(pISSN)
  • /
  • 1876-794X(eISSN)
The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Separation of Nd from mixed chloride solutions with Pr by extraction with saponified PC 88A and scrubbing

  • Banda, Raju (Department of Advanced Material Science & Engineering, Institute of Rare Metal, Mokpo National University) ;
  • Jeon, Ho Seok (Division of Minerals Utilization and Materials, Korea Institute of Geoscience and Mineral Resources (KIGAM)) ;
  • Lee, Man Seung (Department of Advanced Material Science & Engineering, Institute of Rare Metal, Mokpo National University)
  • Received : 2013.12.20
  • Accepted : 2014.03.02
  • Published : 2015.01.25
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Abstract

Solvent extraction of Pr and Nd from chloride solution was carried out using PC 88A for the recovery of magnetic grade Nd. The presence of complexing reagents ($H_2O_2$ and citric acid) affected little the selective extraction of Nd over Pr. The observedmaximum separation factor between Pr and Nd was 1.5, indicating that the separation of Nd and Pr by selective extraction was difficult. Co-extraction of two metals with PC 88A followed by selective scrubbing was tried. Batch simulation of counter-current showed that the complete recovery of Nd was possible and a process flow sheet has been presented.

Keywords

Acknowledgement

Grant : 국내 희유금속 광화대 광상탐사 및 자원확보

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